Hartz poison

About 5 years ago I put a Hartz flea collar on my beautiful cat Lucy. Within 24 hours her neck was completely covered with blisters and sores. The vet took one look at her and asked if I had used any Hartz products on her. She said that all of their products were/are highly toxic to animals. I lost Lucy before the week was out.
My vet said to NEVER use any Hartz products and recommended I tell my animal loving friends and family.

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